A simple, efficient, instant, and easily portable wine cooler, the Ravi does away with the need for ice buckets or refrigeration Insert into bottle neck and pour; wine is chilled instantly as it passes through an inner frozen tube Tube made from same stainless steel used for wine fermentation tanks; maintains wines characteristics and never alters taste A valve controls the rate of flow of wine in order to regulate the temperature, since not all wines are enjoyed at same temp Store in freezer when not in use; stays efficient for 90 minutes out of freezer; requires hand washing for care Ravi is based on the innovative concept of cooling wine at the very moment it is served. It is not the bottle that is cooled, but the wine itself. The cooling process takes place as the wine passes through an internal tube in the Ravi.